Question

When the velocity of a body is doubled its?
1. Momentum is double
2. Kinetic energy is doubled
3. Acceleration is doubled
4. Potential energy is doubled

Answer 1

Correct Answer - Option 1 : Momentum is double

The correct answer is Momentum is double.

• If the velocity is doubled its kinetic energy is multiplied by four times.
  • And there is no relationship between the velocity and potential energy. ​​
• So, if the velocity is doubled, momentum also doubles.
  • ​Momentum = mass× velocity
  • Momentum is directly proportional to velocity.

​​​​​

• The velocity of an object is the rate of change of its position with respect to a frame of reference and is a function of time.
  • Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).
• In mechanics, acceleration is the rate of change of the velocity of an object with respect to time.
  • Accelerations are vector quantities (in that they have magnitude and direction).
  • The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
• Potential energy is the energy that is stored – or conserved - in an object or substance.
  • This stored energy is based on the position, arrangement or state of the object or substance.
• Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
  • The kind of motion may be a translation (or motion along a path from one place to another), rotation about an axis, vibration, or any combination of motions. Kinetic energy.